Learning Forum

[pengzheng97]

I need to use the lumopt with complex index, but meet some problems

CONFIGURATION FILE {'root': 'D:\Program Files\Lumerical\api\python', 'lumapi': 'D:\Program Files\Lumerical\api\python'}

Initializing super optimization

Wavelength range of source object will be superseded by the global settings.

Traceback (most recent call last):

 File "D:/Program Files/Lumerical/python-3.6.8-embed-amd64/fdtd-python/fdtd/JXP/Au_R.py", line 89, in

  beta=1)

 File "D:/Program Files/Lumerical/python-3.6.8-embed-amd64/fdtd-python/fdtd/JXP/Au_R.py", line 58, in runSim

  opt.run(working_dir=working_dir)

 File "D:Program FilesLumericalapipythonlumoptoptimization.py", line 351, in run

  self.initialize(working_dir=working_dir)

 File "D:Program FilesLumericalapipythonlumoptoptimization.py", line 97, in initialize

  list(map(init_suboptimization, self.optimizations))

 File "D:Program FilesLumericalapipythonlumoptoptimization.py", line 93, in init_suboptimization

  cur_optimization.initialize(local_working_dir)

 File "D:Program FilesLumericalapipythonlumoptoptimization.py", line 558, in initialize

  self.geometry.add_geo(self.sim, start_params, only_update = False)

 File "D:Program FilesLumericalapipythonlumoptgeometries opology_complex.py", line 481, in add_geo

  eps = self.eps if params is None else self.get_eps_from_params(sim, params.reshape(-1))

 File "D:Program FilesLumericalapipythonlumoptgeometries opology_complex.py", line 189, in get_eps_from_params

  'eps_geo = topoparamstoindex(params,topo_rho);').format(self.eps_min,self.eps_max,self.filter_R,self.beta,self.eta,self.dx,self.dy) )

 File "D:Program FilesLumericalapipythonlumapi.py", line 1184, in eval

  evalScript(self.handle, code)

 File "D:Program FilesLumericalapipythonlumapi.py", line 248, in evalScript

  raise LumApiError("Failed to evaluate code")

lumapi.LumApiError: 'Failed to evaluate code'

Process finished with exit code 1

and I use the complex like this

eps_wg = (6.5+8j) ** 2
eps_bg = 1 ** 2

there is any solution to solve it?

best wish!😁

[Taylor Robertson]

Unfortunately topology optimization doesn't currently support materials with complex indices. You could submit this as feature request to IX.
https://ix.lumerical.com